问答详情
源自：3-2 MapReduce实战

提交hadoop文件出现配置 ”Please check whether your etc/hadoop/mapred-site.xml contains the below configuration“的问题

提交hadoop出来出现配置问题 

Please check whether your etc/hadoop/mapred-site.xml contains the below configuration:
<property>
  <name>yarn.app.mapreduce.am.env</name>
  <value>HADOOP_MAPRED_HOME=${full path of your hadoop distribution directory}</value>
</property>
<property>
  <name>mapreduce.map.env</name>
  <value>HADOOP_MAPRED_HOME=${full path of your hadoop distribution directory}</value>
</property>
<property>
  <name>mapreduce.reduce.env</name>
  <value>HADOOP_MAPRED_HOME=${full path of your hadoop distribution directory}</value>
</property>

然后我配置 ${full path of your hadoop distribution directory} 提示如下错误  ${/usr/local/hadoop/hadoop-3.0.2/share/hadoop/mapreduce*}，这里HADOOP_MAPRED_HOME=到底配置为什么？

appcache/application_1552702831010_0007/container_1552702831010_0007_02_000001/launch_container.sh: line 19: ${/usr/local/hadoop/hadoop-3.0.2/share/hadoop/mapreduce*}: bad substitution

提问者：MichaelDuan 2019-03-16 19:23

个回答

  • 慕粉13321504129
    2019-05-04 19:23:54

    我之前也是下载的hadoop 3.0版本，但是会出现很多错误。后来找运维朋友他建议用hadoop-2.7.3版本。

    mapred-site.xml配置如下：

    <?xml version="1.0"?>

    <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

    <!-- Put site-specific property overrides in this file. -->

    <configuration>

        <property>

            <name>mapred.job.tracker</name>

            <value>hdfs://localhost:9001</value>

        </property>

        <property>

            <name>mapred.tasktracker.map.tasks.maximum</name>

            <value>2</value>

        </property>

        <property>

            <name>mapred.tasktracker.reduce.tasks.maximum</name>

            <value>2</value>

        </property>

    </configuration>


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